I liked the scene in the opening of Casino Royale, where the bad guy runs out of ammo and throws his pistol at Bond, who grabs it out of the air and throws it back at him, nailing him in the head.

I'm finding that BL2 has me enjoying a greater variety of gun manufacturers. In the original I just used Maliwan. Every time. Volcano Sniper? Combustion Hellfire SMG? Pestilent Defiler? **** yeah, those were the only guns I ever needed. And the occasional explosive bouncing betty grenade, for when you absolutely positively have to kill every mother****er in the room.
In Borderlands 2 my choices are more varied. For snipers I am still loyal to Maliwan. Sometimes you just gotta light that ***** on fire (or lightning, or paint them with acid, or slag, or just blast him into little bits which rain from the sky for hours), and sometimes you have to do it from a mile away. For Rocket Launchers I'm down with Tediore. Why? Because when when I'm using a rocket launcher the last thing I want to waste my time doing is reloading. With Tediore, there's no such thing. Gotta reload? NO PROBLEM. Just throw the rocket launcher, watch it sprout fins, and WHOOSH, off it goes.

Shotguns? I like my shotguns with a BOOM. Need a bigger boom? Gotta go with TORGUE.
Torgue guns are about EXPLOSIONS and MACHISMO and ENGINES and EXPLOSIONS and LOUD NOISES and EXPLOSIONS. You know what sucks? SUBTLETY. You know what’s awesome? NOTSUBTLETY. And also EXPLOSIONS. Every single shot fired from a Torgue gun EXPLODES.
And then there's the revolvers. Ahhh, revolvers.

For them I've fallen in love with Jakobs, because there's just something inherently satisfying about pulling the trigger and hearing a big THWACK, the gun kicks back in your hand, and whatever was on the receiving end no longer has a head. Or, to quote the wiki,
The Jakobs corporation has held to certain values through the years. Family. Honor. Always aiming for the head. When you need to kill your enemies with a single shot, you buy Jakobs: the corporation’s founder, Montgomery Jakobs, always believed in damage above all else. Accuracy? Pah. Recoil reduction? Don’t make me laugh. Elemental effects? Just a bunch of silly fireworks and nonsense. No, the Jakobs corporation believes that there’s nothing better in the world than a big-ass bullet that can tear a man’s head clean off.